Peters, E.J. and Afzal, N., 1992. Characterization of heterogeneities in permeable media with computed tomography imaging. J. Pet. Sci. Eng., 7: 283-296. This study was aimed at developing a procedure for characterizing the heterogeneities in laboratory-scale porous media before they are used for enhanced oil recovery (EOR) corefloods. The porosity distribution in the medium was imaged by X-ray computed tomography (CT). A technique was developed to determine the permeability distribution from displacement data. Semivariograms, histograms and other statistical tools were used to assess and visualize the variability and spatial continuity of the porosity and permeability distributions. Results show that CT imaging is a powerful tool for characterizing permeable media. The results o f this study will be used in our research to assess the impact of heterogeneities on the performance of EOR processes in laboratory corefloods.